Water-heating attachment for stoves.



E. A. MILLS & R. H. RICHARDS.

- WATER HEATING ATTACHMENT FOB. STOVES.

APPLICATION FILED MAY 14, 1913.

1,094,341, I Patented Apr.-21,1914.

I 2 SHEETSSHEET 1.

Z72 Uerz 202 13 v COLUMBIA PLANOGRAPH CO-JVASHINGTON. D. c.

E. A. MILLS & R.'H. RICHARDS.

. WATER HEATING ATTACHMENT FOR STOVES.

APPLICATION FILED MAY 14,1913.

Patented Apr. 21, 1914.

2 SHEETS-SHEET 2.

iyeiz 50713 NOGRAPH co, WASH UNITED STATES PATENT OFFICE.

EDGAR A. MILLS, OF BALTIMORE, AND RICHARD H. RICHARDS, 0F HAMILTON, MARY- LAND, ASSIGNORS OF FIFTY-FIVE ONE-HUNDREDTHS T0 SAID MILLS, TWENTY- FIVE ONE-HUNDREDTI-IS T0 SAID RICHARDS, AND TWENTY ONE-HUNDREDTI-IS TO ULYSSES S. G. PEOPLES, OF BALTIMORE, MARYLAND.

WATER-HEATING ATTACHMENT FOR STOVES.

To all whom it may concern:

Be it known that we, EDGAR A. MILLs and RICHARD H. RICHARDS, citizens of the United States, respectively residing at Baltimore and Hamilton, in the county of Baltimore,

State of Maryland, have invented new and useful Improvements in Water-Heating Attachments for Stoves, of which the follow ing is a specification.

This invention relates to an attachment for ordinary gas, gasolene, kerosene or other stoves for economically heating water and increasing the eiiiciency of the stove as to its heating capacity; and the primary ol ject of the invention is to provide an attachment whereby the flame which is used for cooking or other purposes is simultaneously utilized for heating water in the attachment and thereby materially save in the consumption of the heating medium, such as gas, gasolene, kerosene, or ordinary fuel.

A further object of the invention is to provide a water heating attachment for a gas, gasolene or other stove that may be readily applied without disorganizing the usual burner and fuel feeding means or in the least detracting from or minimizing the heating function of the burner, and in fact increasing the heating surface or heat radiating means of the burner or burners by interposing the attachment between the burner or burners and the cooking utensil or other device.

A still further object of the invention is to provide means in connection with the water heating attachment for a gas or other burner with a pilot or supplemental heating means to maintain a low' degree of heat of the water and a medium or minimized cir culation for slow cooking, or to maintain the water in heated condition when the burner or burners of the stove are not in use.

The improved heating attachment is intended to replace the expensive water heaters now commonly used during hot seasons, and the water therein may be quickly heated at comparatively small expense by means of a small amount of heating medium with material advantage in heating water for bath or other purposes.

The invention consists in the construction and arrangement of certain parts which will Specification of Letters Patent.

Application filed May 14, 1913.

Patented Apr. 21, 1914.

Serial No. 767,734.

be more fully hereinafter described and claimed.

In the drawings: Figure 1 is a top plan view of a gas or gasolene stove showing the improved attachment applied thereto, parts of the attaclnnent being shown in dotted lines to illustrate the circulation of the water between the boiler or tank and the prime heating devices disposed in operative relation to the burners. Fig. 2 is a bottom plan view showing in one portion a gas or gasolene burner and in another portion the attachment without the burner. Fig. 3 is a transverse vertical section through a portion of the attachment and burner taken on the plane of the line 3-3 Fig. 1 and showing a heating plate disposed thereon. Fig. 4: is a detail section through the burner and attachment, taken in the plane of the line l d, Fig. 1 at right angles to that shown in Fig. 3. Fig. 5 is a detail perspective View of one of the water heaters forming the essential member of the attachment.

As heretofore indicated, the improved attachment is adapted to be used in connection \vith'any form of stove, whether gas, gasolene, kerosene or an ordinary cooking stove, and in its application does not require any modification of the burners of the gas, gasolene or analogous stove as it may be readily fitted over or associated with the burners.

It is proposed to manufacture the attachment in sizes proportionate to the standard makes of gas, gasolene or other analogous stoves and connect the pipes to a suitable tank, or in some instances, without requiring any modification of the structure, the water may be carried away in heated condition to any point desired at a distance from the stove, such for instance as a bathroom or other apartment.

For the sake of illustration or to demonstrate one practical application of the invention, a gas stove is shown in the drawings, but it will be understood, as above noted, that the in ention is not limited in its use to any particular form of stove.

In the drawings the numeral 5 designates a gas stove havin the usual. gas supply or feed pipe 6 with inwardly extending valved feed pipes 7 and burners 8 to which said pipes connect in the usual manner. The

form of burner shown is that embodying radiating arms with apertures in the upper sides thereof.

The improved attachment comprises as the essential feature thereof a water heater 9 of the form shown in Fig. 5, and illustrated in detail by the sections 3 and 4 which particularly bring out the cross sectional contour of the water heating legs.

The water heater comprises in the present instance four members 10 centrally separated by radial slots 11 extending partially thereover in an outward direction and also having outer inwardly extending slots 12 between the slots 11 so as to form an open structure or a heater having draft openings or slots at the inner and outer portions thereof to produce a plurality of legs which are formed with top surfaces 13 having the greatest possible area, said top surfacesbeing flat and providing heat radiating means which will greatly facilitate cooking operations and having ribs 13 thereon to serve as rests for cooking utensils and to provide means for preventing the closure of slots and obstruction of the draft. The legs converge from the top surfaces 10 toward the bottom edges 14, as clearly shown by Figs. 3, t and 5, or in other words the legs have an inverted triangular contour in cross-section, the slots 11 and 12 diverging toward the lower portion of the heater to fit over the arms of the burner 8. The divergence of the slots 11 and 12 gives the flame from the burners free upward trend, and the burners are not in the least obstructed in their full ignition capacity. Furthermore there is no tendency to smother or extinguish the burner flames by reason of the wider portions of the slots or openings between the legs and through the centers of the legs being adjacent to the burners. As hereinbefore indicated, the walls of the legs of the heater converge toward the bottom of the heater, and the outer portions of said walls are flat or smooth and present the greatest possible heating surface relatively to the burner flames, and these flames are caused to follow the walls, as clearly shown by Fig. 4, upwardly toward the reduced portions of the slots at the top of the heater. The water in the legs is rapidly heated and circulation quickly set up in what may be termed the heating chamber which continues through the several legs of the heater, because the volume of water adjacent to the greatest source of heat is minimized and rapidly rises toward the upper divergent portion of the chamber.

Between the heaters 9 a connecting cir culating pipe 15 is disposed as clearly shown by Fig. 1, and attached to one of the heaters is an inlet pipe 16 having a valve 17. At the point where the pipe 16 connects with the one heater 9, an enlargement 18 is provided and formed as a part of the heater. Similar enlargements will be provided on the heater where the other pipes connect. The pipe 16 continues to and communicates with a boiler or tank 19 which may be located in any clesired position, and therefrom a pipe 20 extends to the remaining heater 9 and has a valve 21, and the water from the boiler in its circulation passes through the pipe 16 and the adjacent heater 9 and from the latter heater through pipe 15 into the second heater, and from the second heater the water is conducted through a circulating pipe 20 back to the boiler 19. If desired at any time the valve 21 may be closed to allow the water to flow and circulate through a pipe 22 connected to the pipe 20 and having a valve 23, the pipe 22 leading to a bathroom or other apartment. hen the pipe 22 is not in use, the valve 23 may be closed, ant. at times the valves 21 and 23 may both be opened and a general circulation ensue. The boiler may be supplied with water by any suitable connection from asupply source. Other valve rangements could be adopted within the knowledge of a plumber to modify the circulation. It is also to be understood that the boiler or tank 19 may have any suitable means or connections extending to different parts of a house or to a sink, in accordance with modern hot water systems. It will be seen that the heaters 9 may be readily placed over the burners 8 and the circulating pipes with their valves, as well as the boiler or tank 19, can be installed in position without in the least modifying the organization of the gas or other analogous stove.

The improved attachment also comprises a slow heater or means for maintaining water at a minimum degree of heat and under medium circulation when the main burners of the gas stove are not in use, and at such times when it may be desired to leave the stove with the cooking utensils thereon without liability of burning the contents of the utensils. This slow heating attachment may be used also for maintaining the water at minimum heated degree, or for household use when the burners are not in use for cooking purposes. This slow heating attachment consists of pipe 2% connected to the gas or fuel supply pipe 6 and having a valve 25. At its inner end the pipe 24 is provided with a burner terminal 26, the burner at the inner end of the pipe 24: being disposed under the enlargement 18 where the pipe 16 connects with the heater 9. When the slow burner just described is in use, the burners 8 are shut off and the valve 25 is opened, and the burner at the inner end of the pipe 24: is ignited and the flames thereof caused to impinge the under side of the pipe enlargement. The heating effect of this auxiliary burner may be easily regulated by opening or closing the valve 25 more or less as may be desired. The flat top surfaces of the heaters 9 are also provided with openings or recesses 27 to receive legs 28 of a heating plate 29 removably applied over the heater when desired as a heat concentrating means. The plate 29 is held slightly above the flat surfaces of the heaters to avoid interference with perfect combustion. This plate is used when a steady heat is necessary in cooking certain articles of food, or in heating flat irons or other similar devices.

All of the parts of the burner are to be formed of suitable metal. The heaters will preferably be cast and made in two sections and secured by any suitable means, but whatever may be the structure of the device the same essential feature of the downwardly converging legs or chamber walls will be preserved so as to provide maximum heating surfaces adjacent to each burner arm and also contain slots through or between the legs to permit the heat from the flame of the burners to pass upwardly through the legs and to obviate any liability of choking or smothering the flames of the burners. Furthermore, the burners may be readily ignited through the medium of the slots through the heaters, and it will also be understood that the attachment will be applied in such manner that it can be easily disconnected when it is desired to clean out the burners or the stove generally.

The proportions and dimensions of the heaters may be modified at will, and while they have been shown as embodying four legs it will be understood that any number of legs may be used to accord with the burners over which the heaters are placed.

What is claimed is: I

l. The combination with a stove having the usual form of burner, of a water heating attachment removably applied over and structurally independent of the burner and having legs separated by radial slots located over the flame portions of the burner, said slots in part opening out through the periphery of the attachment and provided with straight fiat walls converging in an upward direction fully from the bottom to the top of the attachment and forming a greater water expanse at the top portion of the heating attachment than at the bottom thereof, and water supply and circulating means connected to the heater.

2. The combination with a stove having a burner of usual form, of a water heating attachment applied over and structurally independent of the burner and having legs of V-shaped form in cross-section, the legs being formed and separated by radial slots at angles to each other, said slots respectively opening outwardly from the center through the periphery of the attachment and also extending inwardly from portions of the legs to the center of the attachment and disposed over the flame portions of the burner to provide a greater water expanse at the top portion of the attachment than at the lower portion thereof and wider flame receiving openings at the bottom portions of the legs than at the top portions of the latter, and supply and circulating pipes connected to the heater.

8. The combination with a stove having a burner, of a water heating attachment applied over the burner and structurally independent of the latter and having legs with upper flat surfaces and of V-shaped form in cross-section, the legs being intersected by slots extending from the center out through the periphery of the attachment, the opposing walls of the slots being straight and converging completely from the bottom to the top of the attachment, and supply and circulating pipes connected to the heater.

4. The combination with a stove having burners, of water heaters applied over the burners and each having legs which are in full communication to form a chamber in each heater, each chamber being of V-shaped form so as to bring a minimized quantity of water nearest the source of heat and increasing the expanse and volume of water gradually toward the top of the chamber, the legs being separated by inner and outer radial slots having opposing flat walls converging completely from the bottom to the top of each heater, the inner slots dividing the inner portions of the, legs, and supply and circulating pipes connected to the heaters.

5. The combination with a stove having a fuel supply pipe and burners connected thereto, of chambered water heaters applied over the burners, supply and circulating pipes connected to the heaters, and a slow heating burner independent of the stove burners and connected to the fuel supply and extending inwardly under one of the chambered water heaters to a point adjacent to the connection of one of the circulating pipes with said heater and operating to heat the water in the latter heater to maintain a circulation at a medium heat when the stove burners are not used for heating the chambered water heaters.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

EDGAR A. MILLS. RICHARD H. RICHARDS.

Witnesses:

GEORGE W. MANLY, WILLIAM E. SoHUL.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, .D. 0. 1 

